/**
 *
 *    geo-platform
 *    Rich webgis framework
 *    http://geo-platform.org
 *   ====================================================================
 *
 *   Copyright (C) 2008-2021 geoSDI Group (CNR IMAA - Potenza - ITALY).
 *
 *   This program is free software: you can redistribute it and/or modify it
 *   under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version. This program is distributed in the
 *   hope that it will be useful, but WITHOUT ANY WARRANTY; without
 *   even the implied warranty of MERCHANTABILITY or FITNESS FOR
 *   A PARTICULAR PURPOSE. See the GNU General Public License
 *   for more details. You should have received a copy of the GNU General
 *   Public License along with this program. If not, see http://www.gnu.org/licenses/
 *
 *   ====================================================================
 *
 *   Linking this library statically or dynamically with other modules is
 *   making a combined work based on this library. Thus, the terms and
 *   conditions of the GNU General Public License cover the whole combination.
 *
 *   As a special exception, the copyright holders of this library give you permission
 *   to link this library with independent modules to produce an executable, regardless
 *   of the license terms of these independent modules, and to copy and distribute
 *   the resulting executable under terms of your choice, provided that you also meet,
 *   for each linked independent module, the terms and conditions of the license of
 *   that module. An independent module is a module which is not derived from or
 *   based on this library. If you modify this library, you may extend this exception
 *   to your version of the library, but you are not obligated to do so. If you do not
 *   wish to do so, delete this exception statement from your version.
 */
package org.geosdi.geoplatform.connector.api.capabilities.model.csw.converter;

import com.thoughtworks.xstream.converters.Converter;
import com.thoughtworks.xstream.converters.MarshallingContext;
import com.thoughtworks.xstream.converters.UnmarshallingContext;
import com.thoughtworks.xstream.io.HierarchicalStreamReader;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import java.util.ArrayList;
import java.util.List;
import org.geosdi.geoplatform.connector.api.capabilities.model.csw.AbstractCatalogKeyword;
import org.geosdi.geoplatform.connector.api.capabilities.model.csw.CatalogKeyword;
import org.geosdi.geoplatform.connector.api.capabilities.model.csw.CatalogKeywordType;
import org.geosdi.geoplatform.connector.api.capabilities.model.csw.CatalogKeywords;

/**
 *
 * @author Giuseppe La Scaleia - CNR IMAA geoSDI Group
 * @email  giuseppe.lascaleia@geosdi.org
 */
public class CatalogKeywordsConverter implements Converter {

    @Override
    public void marshal(Object source, HierarchicalStreamWriter writer, MarshallingContext context) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public Object unmarshal(HierarchicalStreamReader reader, UnmarshallingContext context) {
        CatalogKeywords catalogKeywords = new CatalogKeywords();
        List<AbstractCatalogKeyword> keywords = new ArrayList<AbstractCatalogKeyword>();
        while (reader.hasMoreChildren()) {
            reader.moveDown();
            if (reader.getNodeName().equals("ows:Keyword")) {
                CatalogKeyword keyword = new CatalogKeyword();

                keyword.setKeyword(reader.getValue());
                keywords.add(keyword);
            } else if (reader.getNodeName().equals("ows:Type")) {
                CatalogKeywordType keywordType = new CatalogKeywordType();
                keywordType.setType(reader.getValue());
                keywords.add(keywordType);
            }
            reader.moveUp();
        }

        catalogKeywords.setKeywords(keywords);

        return catalogKeywords;
    }

    @Override
    public boolean canConvert(Class type) {
        return type.equals(CatalogKeywords.class);
    }
}
